@hightor,
I don't know the background behind Trump's statements, but there is evidence suggesting the Boeing 777 Max has stall prevention features built in to its control system that might have caused two multi fatality crashes, both occurring during the initial climb out after takeoff. These features input a rapid nose down signal to the flight controls, independent of any pilot inputs whenever the flight control computer indicates a high angle of attack and approaching wing stall. The facts are as yet unclear, and Boeing has so far acknowledged only possibilities that they are investigating. However Boeing's stock took a dive yesterday after several nations grounded all their 777 Max aircraft, pending resolution of the matter.
I and many other Naval aviators have had similar experiences with early automated carrier landing systems then installed in A-6, A-7 and F-14 aircraft. With a smooth sea and moderate, steady winds they worked fairly well. However, with a rough sea (and carrier deck pitching up & down as much as 60 ft.) and/or wake turbulence resulting from high winds over the deck, they became positively dangerous in a situation with more complexity than the computer could then manage. No one used these systems, even on a good day, because it simply wasn't worth the loss of practice & pilot proficiency that was vital in tough sea conditions. It took about ten years of continued development to make these systems even moderately reliable in tough conditions and my understanding is that situation persists today.
We're likely to encounter a few analogous problems with automated driving systems as they are introduced, and my expectation is that the tort lawyers will end up driving the resulting policies.